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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "SessionStorage.h"
#include "SessionStorageCache.h"
#include "SessionStorageManager.h"
#include "mozilla/Preferences.h"
#include "mozilla/dom/StorageBinding.h"
#include "nsContentUtils.h"
#include "nsIPrincipal.h"
#include "nsPIDOMWindow.h"
#include "nsThreadUtils.h"
namespace mozilla::dom {
NS_IMPL_CYCLE_COLLECTION_INHERITED(SessionStorage, Storage, mManager);
NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(SessionStorage)
NS_INTERFACE_MAP_END_INHERITING(Storage)
NS_IMPL_ADDREF_INHERITED(SessionStorage, Storage)
NS_IMPL_RELEASE_INHERITED(SessionStorage, Storage)
SessionStorage::SessionStorage(nsPIDOMWindowInner* aWindow,
nsIPrincipal* aPrincipal,
nsIPrincipal* aStoragePrincipal,
SessionStorageCache* aCache,
SessionStorageManager* aManager,
const nsAString& aDocumentURI, bool aIsPrivate)
: Storage(aWindow, aPrincipal, aStoragePrincipal),
mCache(aCache),
mManager(aManager),
mDocumentURI(aDocumentURI),
mIsPrivate(aIsPrivate),
mHasPendingStableStateCallback(false) {
MOZ_ASSERT(aCache);
}
SessionStorage::~SessionStorage() = default;
int64_t SessionStorage::GetOriginQuotaUsage() const {
nsresult rv = EnsureCacheLoadedOrCloned();
if (NS_WARN_IF(NS_FAILED(rv))) {
return 0;
}
return mCache->GetOriginQuotaUsage();
}
uint32_t SessionStorage::GetLength(nsIPrincipal& aSubjectPrincipal,
ErrorResult& aRv) {
if (!CanUseStorage(aSubjectPrincipal)) {
aRv.Throw(NS_ERROR_DOM_SECURITY_ERR);
return 0;
}
nsresult rv = EnsureCacheLoadedOrCloned();
if (NS_WARN_IF(NS_FAILED(rv))) {
aRv.Throw(rv);
return 0;
}
return mCache->Length();
}
void SessionStorage::Key(uint32_t aIndex, nsAString& aResult,
nsIPrincipal& aSubjectPrincipal, ErrorResult& aRv) {
if (!CanUseStorage(aSubjectPrincipal)) {
aRv.Throw(NS_ERROR_DOM_SECURITY_ERR);
return;
}
nsresult rv = EnsureCacheLoadedOrCloned();
if (NS_WARN_IF(NS_FAILED(rv))) {
aRv.Throw(rv);
return;
}
mCache->Key(aIndex, aResult);
}
void SessionStorage::GetItem(const nsAString& aKey, nsAString& aResult,
nsIPrincipal& aSubjectPrincipal,
ErrorResult& aRv) {
if (!CanUseStorage(aSubjectPrincipal)) {
aRv.Throw(NS_ERROR_DOM_SECURITY_ERR);
return;
}
nsresult rv = EnsureCacheLoadedOrCloned();
if (NS_WARN_IF(NS_FAILED(rv))) {
aRv.Throw(rv);
return;
}
mCache->GetItem(aKey, aResult);
}
void SessionStorage::GetSupportedNames(nsTArray<nsString>& aKeys) {
if (!CanUseStorage(*nsContentUtils::SubjectPrincipal())) {
// return just an empty array
aKeys.Clear();
return;
}
nsresult rv = EnsureCacheLoadedOrCloned();
if (NS_WARN_IF(NS_FAILED(rv))) {
// return just an empty array
aKeys.Clear();
return;
}
mCache->GetKeys(aKeys);
}
void SessionStorage::SetItem(const nsAString& aKey, const nsAString& aValue,
nsIPrincipal& aSubjectPrincipal,
ErrorResult& aRv) {
if (!CanUseStorage(aSubjectPrincipal)) {
aRv.Throw(NS_ERROR_DOM_SECURITY_ERR);
return;
}
nsresult rv = EnsureCacheLoadedOrCloned();
if (NS_WARN_IF(NS_FAILED(rv))) {
aRv.Throw(rv);
return;
}
nsString oldValue;
rv = mCache->SetItem(aKey, aValue, oldValue);
if (NS_WARN_IF(NS_FAILED(rv))) {
aRv.Throw(rv);
return;
}
if (rv == NS_SUCCESS_DOM_NO_OPERATION) {
return;
}
BroadcastChangeNotification(aKey, oldValue, aValue);
}
void SessionStorage::RemoveItem(const nsAString& aKey,
nsIPrincipal& aSubjectPrincipal,
ErrorResult& aRv) {
if (!CanUseStorage(aSubjectPrincipal)) {
aRv.Throw(NS_ERROR_DOM_SECURITY_ERR);
return;
}
nsresult rv = EnsureCacheLoadedOrCloned();
if (NS_WARN_IF(NS_FAILED(rv))) {
aRv.Throw(rv);
return;
}
nsString oldValue;
rv = mCache->RemoveItem(aKey, oldValue);
MOZ_ASSERT(NS_SUCCEEDED(rv));
if (rv == NS_SUCCESS_DOM_NO_OPERATION) {
return;
}
BroadcastChangeNotification(aKey, oldValue, VoidString());
}
void SessionStorage::Clear(nsIPrincipal& aSubjectPrincipal, ErrorResult& aRv) {
uint32_t length = GetLength(aSubjectPrincipal, aRv);
if (!length) {
return;
}
nsresult rv = EnsureCacheLoadedOrCloned();
if (NS_WARN_IF(NS_FAILED(rv))) {
aRv.Throw(rv);
return;
}
mCache->Clear();
BroadcastChangeNotification(VoidString(), VoidString(), VoidString());
}
void SessionStorage::BroadcastChangeNotification(const nsAString& aKey,
const nsAString& aOldValue,
const nsAString& aNewValue) {
NotifyChange(this, StoragePrincipal(), aKey, aOldValue, aNewValue,
u"sessionStorage", mDocumentURI, mIsPrivate, false);
// Sync changes on SessionStorageCache at the next statble state.
if (mManager->CanLoadData()) {
MaybeScheduleStableStateCallback();
}
}
bool SessionStorage::IsForkOf(const Storage* aOther) const {
MOZ_ASSERT(aOther);
if (aOther->Type() != eSessionStorage) {
return false;
}
return mCache == static_cast<const SessionStorage*>(aOther)->mCache;
}
void SessionStorage::MaybeScheduleStableStateCallback() {
AssertIsOnOwningThread();
if (!mHasPendingStableStateCallback) {
nsContentUtils::RunInStableState(
NewRunnableMethod("SessionStorage::StableStateCallback", this,
&SessionStorage::StableStateCallback));
mHasPendingStableStateCallback = true;
}
}
void SessionStorage::StableStateCallback() {
AssertIsOnOwningThread();
MOZ_ASSERT(mHasPendingStableStateCallback);
MOZ_ASSERT(mManager);
MOZ_ASSERT(mCache);
mHasPendingStableStateCallback = false;
if (mManager->CanLoadData()) {
mManager->CheckpointData(*StoragePrincipal(), *mCache);
}
}
nsresult SessionStorage::EnsureCacheLoadedOrCloned() const {
AssertIsOnOwningThread();
MOZ_ASSERT(mManager);
if (!mManager->CanLoadData()) {
return NS_OK;
}
// Ensure manager actor.
nsresult rv = mManager->EnsureManager();
if (NS_WARN_IF(NS_FAILED(rv))) {
return rv;
}
// Ensure cache is loaded or cloned.
if (mCache->WasLoadedOrCloned()) {
return NS_OK;
}
return mManager->LoadData(*StoragePrincipal(), *mCache);
}
} // namespace mozilla::dom
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